ENGINE HESISTATES UPON ACCELERATION AFTER

I have a 1995 Camry that hesitates (almost dies) upon acceleration immediately after a cold start. Once the car is warm the hesitation is almost non-apparent although not quite as peppy, especially upon acceleration up an incline. I have replaced the fuel filter, but it did not solve the problem. Any help/suggestions would be much appreciated.

The fuel pressures are good, this vehicle does not have a mass airflow, and I have cleaned the intake side of the throttle body (butterfly valve and opening to hose). The spark plugs were replaced as well as new wires. Any other ideas?

I have not checked yet. Another thought, would a worn valve guide effect the car this way? It does have a little rough idle that improves upon increasing RPMs, but I only notice the hesitation when the car is in drive. If it is in park, I can press on the accelerator without any hesistation (even upon cold start)